US6722599B2 - Single reel tape cartridge sliding door with auxiliary leader retractor - Google Patents
Single reel tape cartridge sliding door with auxiliary leader retractor Download PDFInfo
- Publication number
- US6722599B2 US6722599B2 US10/464,207 US46420703A US6722599B2 US 6722599 B2 US6722599 B2 US 6722599B2 US 46420703 A US46420703 A US 46420703A US 6722599 B2 US6722599 B2 US 6722599B2
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- United States
- Prior art keywords
- tape
- sliding door
- leader
- retractor
- tape cartridge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000000717 retained effect Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 238000013500 data storage Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
- G11B23/02—Containers; Storing means both adapted to cooperate with the recording or reproducing means
- G11B23/04—Magazines; Cassettes for webs or filaments
- G11B23/08—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends
- G11B23/107—Magazines; Cassettes for webs or filaments for housing webs or filaments having two distinct ends using one reel or core, one end of the record carrier coming out of the magazine or cassette
Definitions
- the invention relates to digital tape drives, and in particular, to a sliding door assembly comprising a sliding door that actuates an auxiliary leader retractor for use with a single reel tape cartridge.
- tape drives In the art of data storage, digital data is stored on tape media utilizing a variety of designs, but in all cases, magnetic tape media is wound between a pair of tape reels, as data is transferred to or from the tape media.
- the physical space required to store data is an important concern.
- tape drives often use a single reel tape cartridge design.
- the single reel design utilizes a supply reel located within the tape cartridge and a take up reel located within the tape drive. A length of magnetic tape media for storing digital data is wound on the supply reel. After the tape cartridge-is inserted into the tape drive, the tape media is connected to the takeup reel and wound along a tape path internal to the tape drive.
- the single reel tape cartridge design reduces the space previously required in dual reel tape cartridges where the tape traveled between two loosely anchored reels.
- the space saved in the one reel design where the tape travels between the supply reel in the tape cartridge and a firmly anchored take up reel in the tape drive translates to increased capacity per tape cartridge by providing area for additional tape media.
- Single reel tape cartridges include a door that opens to expose the tape media leader tab. In its normal position, the flexible leader tab obtrudes from the tape cartridge. The leader tab is retracted into the tape cartridge when the door is closed.
- a method for connecting the flexible leader tab to the takeup reel utilizes a leader loading mechanism within the tape drive. As the single reel tape cartridge is inserted into the tape drive the tape cartridge door opens and the flexible leader tab attached to the tape media obtrudes from the tape cartridge. The leader loading mechanism catches the closed loop at the end of the leader tab and pulls the leader tab toward the takeup reel. The leader load mechanism attaches the loop on the end of the leader tab to the takeup reel for operation.
- the door performs two functions. First, it protects the tape media when the tape cartridge is not in use. Second, the door opens for operation to make the leader tab available to the leader loading mechanism.
- the typical solution to the problem has been a door assembly that automatically opens as the tape cartridge is inserted into the tape drive.
- One known door assembly employs a door that pivots horizontally and includes a catch that corresponds to an indentation in the tape drive. As the tape cartridge is inserted into the tape drive, the catch makes contact with the indentation in the tape drive causing the door to pivot to the open position. Once open, the door remains within the tape drive during operation. As the pivoting door opens, it arcs through approximately a quarter circular profile.
- the door assembly just described requires internal tape drive space for the door to horizontally pivot between the open and closed position and area for the opened door during operation.
- Another known door assembly incorporates a vertically pivoting door. This design requires additional space within the tape cartridge for the door in its open position. The height of the tape cartridge is dictated by the space required for the magnetic tape and for the opened door. Likewise, the height of the tape drive is influenced by the height of the tape cartridge and the drive mechanism located beneath the inserted tape cartridge.
- Another horizontally pivoting door pivots open and is retained in an area behind the tape path, internal to the tape cartridge, during use.
- the area required within the tape cartridge for the door during operation decreases the area available for tape media, thus reducing the storage capacity of the single reel tape cartridge.
- the tape cartridge just described requires excessive area within the tape drive for the door assembly to pivot open and uses precious tape cartridge area for the door assembly during operation, thus reducing storage capacity.
- the tape cartridge door assemblies just described influence the size of the tape drive.
- the first horizontally pivoting door influences the tape drives length while the vertically pivoting door influences the tape drive height. Additionally, the horizontally pivoting door that is retained within the tape cartridge during operation uses precious area within the tape cartridge for the door assembly.
- Single reel tape cartridges include a flexible leader tab connected to the end of the tape media within the tape cartridge.
- the leader tab must be accessible to the leader load mechanism located in the tape drive for operation.
- Existing tape drives for single reel tape cartridges having a sliding door open the door by sliding the door to the right.
- the flexible leader tab obtrudes toward the right side of the tape cartridge.
- the leader load mechanism catches the leader tab, then pulls the leader tab and attached magnetic tape right toward the takeup reel.
- the sliding door assembly would have to slide right to open and left to close, catching the leader tab when closing. For the reason just discussed, the sliding door assembly is not compatible with existing single reel tape drives.
- the tape cartridges door assemblies just described fail to provide additional area within the tape cartridge for tape media without requiring additional area within the tape drive for the door assembly during operation.
- the sliding door assembly resolves the problems of retaining the door assembly within the tape drive or the tape cartridge, however, it is not compatible with existing tape drives.
- the present sliding door assembly with auxiliary leader retractor overcomes the problems outlined above and advances the art by providing a sliding door assembly that comprises a sliding door and a pivoting auxiliary leader retractor.
- the sliding door with auxiliary leader retractor does not require additional tape cartridge or tape drive area for the door during operation and is compatible with existing tape drives that accept sliding door tape cartridges.
- the present sliding door assembly with auxiliary leader retractor overcomes the problems while protecting the tape media when the tape cartridge is not in use and automatically exposing the leader tab for operation.
- the sliding door and the auxiliary leader retractor are integrally connected such that, when the sliding door is moved to the open position, the pivoting auxiliary leader retractor pivots open to expose the leader tab.
- the auxiliary leader retractor is approximately the length of the leader tab it is retracting. Unlike existing tape cartridges having horizontally pivoting door assemblies, when the auxiliary leader retractor pivots open, the door protrudes a minimal distance from the front plane of the tape cartridge.
- the sliding door with auxiliary leader retractor overcomes the problem of requiring excessive area within the tape drive for the door assembly to pivot open or for retraining the door during operation.
- the sliding door moves on tracks located on the exterior surface of the tape cartridge housing.
- the auxiliary leader retractor located adjacent to the sliding door pivots away from the tape cartridge front plane a short distance into the tape drive.
- an actuation apparatus is integrally connected between the sliding door and the pivoting auxiliary leader retractor, such that when the sliding door is slid open or closed, the pivoting door moves to a corresponding open or closed position.
- the actuation-apparatus is located along the top or the bottom interior surface of the tape cartridge housing. Sliding the door on the exterior surface of the tape cartridge and pivoting the auxiliary leader retractor away from the tape cartridge front plane overcomes the problem of using valuable internal tape cartridge area for the door assembly.
- the present sliding door with auxiliary leader retractor includes a sliding door that slides to the right. Unlike traditional sliding door tape cartridges, the sliding door does not interfere with retraction of the leader tab when the tape cartridge is removed from the tape drive. Instead, as the tape cartridge is removed from the tape drive, an actuator apparatus integrally connected between the sliding door and the auxiliary leader retractor pivots the auxiliary leader retractor closed. Use of a pivoting auxiliary leader retractor overcomes the problem of damaging the leader tab as the sliding door is closed.
- the combination of the sliding door to enclose the tape media when the tape cartridge is not in use and the small pivoting auxiliary leader retractor to retract the leader tab eliminates the need to allocated space within the tape drive or the tape cartridge for the door during operation and is compatible with existing single reel tape drives that accept tape cartridges with a sliding door.
- FIG. 1 illustrates a perspective view of a single reel tape cartridge of the prior art
- FIG. 2 illustrates a perspective view of an embodiment of the sliding door with auxiliary leader retractor with doors closed
- FIG. 3 illustrates a perspective view of an embodiment of the sliding door with auxiliary leader retractor with doors open
- FIG. 4 illustrates a perspective view of another embodiment of the sliding door with auxiliary leader retractor with doors closed
- FIG. 5 illustrates a perspective view of another embodiment of the sliding door with auxiliary leader retractor with doors open
- FIG. 6 illustrates a top view of another embodiment of the sliding door with auxiliary leader retractor with doors closed.
- FIG. 7 illustrates a top view of another embodiment of the sliding door with auxiliary leader retractor with doors open.
- sliding door assembly with auxiliary leader retractor (hereafter referred to as sliding door assembly) summarized above and defined by the enumerated claims may be better understood by referring to the following detailed description, which should be read in conjunction with the accompanying drawings.
- This detailed description of the preferred embodiment is not intended to limit the enumerated claims, but to serve as a particular example thereof.
- the phraseology and terminology employed herein is for the purpose of description, and not of limitation.
- FIG. 1 Prior Art—FIG. 1 :
- FIG. 1 The horizontally pivoting door assembly 2 currently used on a DLT style tape cartridge 4 is illustrated in FIG. 1 .
- the pivoting door pivots near the right corner of tape cartridge 4 to allow the pivoting door 2 to open and close.
- an indentation located on the interior side of the tape drive catches one end of the pivoting door causing the pivoting door to pivot open.
- the tape drive area required for the pivoting door to pivot open is approximately a quarter circular area having a radius approximately equal to the length of the pivoting door.
- the open door When the tape cartridge is fully inserted into the tape drive, the open door is either retained internal to the tape drive, or is drawn into the side 8 of the tape cartridge.
- pivoting door 2 pivots approximately 90 degrees and is drawn along the side of tape cartridge 4 in an area behind the tape path.
- valuable internal tape cartridge space is used for the pivoting door during operation.
- the alternative configuration retains the pivoting door along the side of the tape drive during operation. While the alternative configuration reduces the area required for the door within the tape cartridge, it increases the area required within the tape drive, thus increasing the length of the tape drive.
- the sliding door assembly with auxiliary leader retractor provides a means for enclosing the tape media and retracting the leader tab without using valuable space in the tape cartridge or the tape drive for the door assembly when the tape cartridge is in use.
- the sliding door assembly comprises three components, a sliding door to protect the tape media while the tape cartridge is not in use, an auxiliary leader retractor and an actuation apparatus.
- the auxiliary leader retractor protects the leader tab when the tape cartridge is not in use and provides a means for exposing the leader tab for operation.
- sliding door 10 is located on the exterior surface of the tape cartridge 4 housing.
- Adjacent auxiliary leader retractor 50 is hinged internal to tape cartridge 4 housing.
- the sliding door assembly is shown in the closed position in FIG. 2 and in FIG. 3 with the auxiliary retracing door 50 in the partially open position, exposing leader tab 6 .
- Tape cartridge 4 has a means for sliding (not shown) sliding door 10 located on the top and bottom exterior housing of tape cartridge 4 and sliding door 10 is slid horizontally on the sliding means to an open or closed position. While sliding means are apparent to those skilled in the art, the present sliding door assembly is described using tracks 20 as a sliding means.
- Tracks 20 can be molded into the plastic housing and can include stops, not shown, at either or both ends of the tracks to limit the travel of sliding door 10 .
- sliding door 10 can slide to entirely cover internally hinged auxiliary leader retractor 50 to prevent damaging the auxiliary leader retractor or from accidentally exposing leader tab 6 .
- the sliding door assembly just described does not use valuable area within the tape cartridge for the door during use. Area required within the tape drive for exposing the leader tab for operation is minimized by providing a pivoting auxiliary leader retractor that is no longer then the leader tab it is protecting. Additionally, providing a sliding door that opens by sliding the sliding door to the right makes the present sliding door assembly compatible with existing tape drives. For ease of operation, an actuating means is used to automatically open and close auxiliary leader retractor 50 corresponding to opening and closing sliding door 10 .
- auxiliary leader retractor 50 includes a small perpendicular flange 52 on the top and the bottom of one end.
- Flanges 52 include a means for pivoting 56 about a pivot point 58 .
- Pivoting means may be holes in flanges 52 for receiving pegs protruding from the top and bottom of tape cartridge 4 housing pivot point 58 thereby forming a hinge.
- the pivoting means may be holes at the pivot point in the top and bottom of tape cartridge 4 to receive pegs that protrude from flanges 52 .
- auxiliary leader retractor 50 when sliding door 10 is in the closed position it covers auxiliary leader retractor 50 , preventing the auxiliary leader retractor from opening.
- the actuating means pivotally opens auxiliary leader retractor 50 as illustrated in FIG. 5 .
- tracks on the exterior housing of the tape cartridge provide a means for sliding the sliding door between an open and a closed position.
- the tracks may include a stop on the left side to prevent the sliding door from sliding beyond the auxiliary leader retractor and on the right to stop the sliding door when the auxiliary leader retractor is fully opened.
- the actuation means is spring 80 .
- the means for retracting the leader tab is a pivoting door and the means for enclosing the tape is a sliding door.
- auxiliary leader retractor 50 is hinged internal to tape cartridge 4 . Only flanges 52 of pivoting door 50 are internal to tape cartridge 4 and when closed, auxiliary leader retractor 50 is parallel to the front plane of tape cartridge 4 .
- at least one flange on auxiliary leader retractor 50 includes an interconnecting means for connecting to the auction means, spring 80 in the embodiment, between auxiliary leader retractor 50 and sliding door 10 .
- Sliding door 10 includes at least one flange 82 protruding perpendicularly from the back of sliding door 10 , internal to tape cartridge 4 and approximately parallel to flange 52 on auxiliary leader retractor 59 .
- Flange 82 is located such that as sliding door 10 slides over auxiliary leader retractor 50 , flange 82 does not cross over auxiliary leader retractor 50 .
- Flanges 52 and 82 include an interconnecting means 84 for connecting spring 80 between flanges 52 and 82 .
- auxiliary leader retractor 50 When sliding door 10 is covering auxiliary leader retractor 50 , spring 80 is in its original compressed state. Referring to FIG. 7, as sliding door 10 slides open, spring 80 is elongated, exerting a torque on auxiliary leader retractor 50 . As the torque increases, auxiliary leader retractor 50 pivots to the open position, exposing leader tap 6 for operation. When sliding door 10 is returned to the closed position, retractor 50 causing auxiliary leader retractor 50 to rotate to a closed position. While the spring actuation embodiment has been illustrated and described with the pivoting auxiliary leader retractor hinged internal to the tape cartridge housing, the auxiliary leader retractor could be hinged external with a flange and interconnecting means internal to the tape cartridge.
- the present sliding door with auxiliary leader retractor may be configured with alternative actuating means for automatically opening the auxiliary leader retractor when the sliding door is opened.
- a sliding door that actuates an auxiliary leader retractor makes that tape cartridge compatible with existing tape drives.
- Single reel tape cartridges with the present sliding door assembly can also be used with a more compact disk drive.
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Abstract
Description
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/464,207 US6722599B2 (en) | 2001-10-05 | 2003-06-18 | Single reel tape cartridge sliding door with auxiliary leader retractor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/972,552 US6604701B2 (en) | 2001-10-05 | 2001-10-05 | Single reel tape cartridge sliding door with auxiliary leader retractor |
US10/464,207 US6722599B2 (en) | 2001-10-05 | 2003-06-18 | Single reel tape cartridge sliding door with auxiliary leader retractor |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/972,552 Division US6604701B2 (en) | 2001-10-05 | 2001-10-05 | Single reel tape cartridge sliding door with auxiliary leader retractor |
Publications (2)
Publication Number | Publication Date |
---|---|
US20030209623A1 US20030209623A1 (en) | 2003-11-13 |
US6722599B2 true US6722599B2 (en) | 2004-04-20 |
Family
ID=27663773
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/972,552 Expired - Fee Related US6604701B2 (en) | 2001-10-05 | 2001-10-05 | Single reel tape cartridge sliding door with auxiliary leader retractor |
US10/464,207 Expired - Fee Related US6722599B2 (en) | 2001-10-05 | 2003-06-18 | Single reel tape cartridge sliding door with auxiliary leader retractor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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US09/972,552 Expired - Fee Related US6604701B2 (en) | 2001-10-05 | 2001-10-05 | Single reel tape cartridge sliding door with auxiliary leader retractor |
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US (2) | US6604701B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7317593B1 (en) * | 2003-11-05 | 2008-01-08 | Storage Technology Corporation | Tape cartridge with pivotable access door |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6604701B2 (en) * | 2001-10-05 | 2003-08-12 | Quantum | Single reel tape cartridge sliding door with auxiliary leader retractor |
ATE542653T1 (en) * | 2001-11-15 | 2012-02-15 | Max Co Ltd | BRACKET MAGAZINE |
US7000860B1 (en) | 2003-09-25 | 2006-02-21 | Storage Technology Corporation | Tape cartridge |
US7077353B1 (en) | 2003-11-05 | 2006-07-18 | Storage Technology Corporation | Tape cartridge with movable access door |
US6971602B1 (en) | 2003-12-26 | 2005-12-06 | Storage Technology Corporation | Tape cartridge |
JP2005276386A (en) * | 2004-03-26 | 2005-10-06 | Fuji Photo Film Co Ltd | Leader tape, magnetic tape cartridge, and magnetic record reproducing method |
US7768776B1 (en) * | 2008-10-17 | 2010-08-03 | Western Digital Technologies, Inc. | Disk drive enclosure with a sliding door having tabs with adjacent through-slots |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6236539B1 (en) * | 1997-12-24 | 2001-05-22 | Fuji Photo Film Co., Ltd. | Magnetic tape cartridge with spring member abutting leader pin |
US6604701B2 (en) * | 2001-10-05 | 2003-08-12 | Quantum | Single reel tape cartridge sliding door with auxiliary leader retractor |
-
2001
- 2001-10-05 US US09/972,552 patent/US6604701B2/en not_active Expired - Fee Related
-
2003
- 2003-06-18 US US10/464,207 patent/US6722599B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6236539B1 (en) * | 1997-12-24 | 2001-05-22 | Fuji Photo Film Co., Ltd. | Magnetic tape cartridge with spring member abutting leader pin |
US6604701B2 (en) * | 2001-10-05 | 2003-08-12 | Quantum | Single reel tape cartridge sliding door with auxiliary leader retractor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7317593B1 (en) * | 2003-11-05 | 2008-01-08 | Storage Technology Corporation | Tape cartridge with pivotable access door |
Also Published As
Publication number | Publication date |
---|---|
US20030209623A1 (en) | 2003-11-13 |
US6604701B2 (en) | 2003-08-12 |
US20030066922A1 (en) | 2003-04-10 |
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